Centuries: 16th century - 17th century - 18th century
Decades: 1620s 1630s 1640s 1650s 1660s - 1670s - 1680s 1690s 1700s 1710s 1720s
Years: 1666 1667 1668 1669 1670 - 1671 - 1672 1673 1674 1675 1676
... the result will be the same no matter where we place parentheses.
The inverse of a product is the product of the inverses in the opposite order: (a * b)−1 = ...
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